Water-in-oil emulsion composition

Abstract

To provide a water-in-oil emulsion composition that can impart moist and fresh spreading and dry post skin touch in applying the composition even if the composition does not contain silicone oils in the same manner as they are blended.SOLUTION: A water-in-oil emulsion composition that contains a) modified silicone and b) oil solution, and substantially does not contain silicone oil, in which a) the modified silicone has siloxane skeleton, alkyl group having the carbon number 12 or more, polyoxyalkylene group or polyglycerol group, and b) 20 wt.% or more of the oil solution includes ester oil.SELECTED DRAWING: None

Description

Technical Field

[0001] The present invention relates to a water-in-oil emulsion composition, and more specifically, to a water-in-oil emulsion composition suitable for cosmetics, which has excellent usability even without containing a volatile silicone oil.

Background Art

[0002] One of the dosage forms of external skin preparations such as cosmetics is the water-in-oil emulsion type. Since the oil-in-water type emulsion composition has an oily component in the continuous phase, it has a high occlusion effect and advantages such as high moisturizing property. On the other hand, the greasy feeling may be avoided in some cases. In order to solve such problems, in water-in-oil emulsion compositions, particularly in external skin preparations such as cosmetics, volatile silicone oils have been conventionally blended. This is because volatile silicone oils have low viscosity, good extensibility, and can suppress stickiness and impart a refreshing feeling (for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in recent years, some volatile silicone oils such as octamethylcyclotetrasiloxane (so-called D4), decamethylcyclopentasiloxane (so-called D5), and dodecamethylcyclohexasiloxane (so-called D6) have been regarded as having problems with bioaccumulation due to their recalcitrance both at home and abroad, and tend to be subject to use regulations or restricted in use. In view of such a situation, an object of the present invention is to provide a water-in-oil emulsion composition that can impart supple elongation during application and a smooth after-feel on the skin even without containing silicone oil, particularly volatile silicone oil, in the same manner as when they are blended.

Means for Solving the Problems

[0005] As a result of intensive studies to solve the above problems, the present inventors have found that by using a specific modified silicone and a specific oil agent, it is possible to impart supple elongation during application and a smooth after-feel on the skin even in a water-in-oil emulsion composition without blending silicone oil, and thus have completed the present invention.

[0006] That is, the present invention is as follows. [1] A water-in-oil emulsion composition containing a) a modified silicone and b) an oil agent and substantially free of silicone oil, wherein a) the modified silicone has a siloxane backbone, an alkyl group having 12 or more carbon atoms, and a polyoxyalkylene group or a polyglycerin group, and b) 20% by weight or more of the oil agent contains an ester oil. [2] The composition according to [1], wherein a) the modified silicone is selected from the group consisting of lauryl PEG-10 tris(trimethylsiloxy)silylethyldimethylcon, cetyl diglyceryl tris(trimethylsiloxy)silylethyldimethylcon, cetyl PEG / PPG-10 / 1 dimethylcon, lauryl PEG-9 polydimethylsiloxyethyldimethylcon, and lauryl PEG / PPG-18 / 18 methylcon. [3] The composition according to [1] or [2], wherein the silicone oil is a volatile silicone oil. [4] The composition according to [3], wherein the volatile silicone oil is selected from the group consisting of octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane. [5] The composition according to any one of [1] to [4], wherein b) the oil agent contains a volatile hydrocarbon oil. [6] b) The composition according to any one of [1] to [5], wherein the oil agent is 30 to 70% by weight of the whole composition. [7] Further, c) The composition according to any one of [1] to [6], which contains an organically modified clay mineral. [8] The composition according to any one of [1] to [7], which is a topical skin preparation.

Advantages of the Invention

[0007] The water-in-oil emulsion composition of the present invention imparts a fresh stretch and a non-greasy and smooth after-feel on the skin when applied, and is also stable over time. Therefore, according to the present invention, a water-in-oil emulsion composition suitable for use as a topical skin preparation is provided.

Modes for Carrying Out the Invention

[0008] The water-in-oil emulsion composition of the present invention contains a) a modified silicone and b) an oil agent, and substantially does not contain silicone oil.

[0009] The a) modified silicone in the present invention refers to those having a siloxane skeleton, an alkyl group having 12 or more carbon atoms, and a polyoxyalkylene group or a polyglycerin group. Here, the siloxane skeleton refers to a so-called silicone chain, and examples thereof include dimethylpolysiloxane (dimethicone), methylphenylpolysiloxane, methylhydrogenpolysiloxane, etc. The length of the silicone chain is not particularly limited and may be of a size commonly used in cosmetics and the like. Further, the a) modified silicone may be of a block copolymer type containing a chain of a polyoxyalkylene group or a polyglycerin group and a silicone chain in the main chain, or a terminal-modified type, or a side-chain modified type in which a polyoxyalkylene group or a polyglycerin group is bonded as a side chain of the siloxane skeleton. The number of moles of oxyalkylene added to the polyoxyalkylene group contained in the a) modified silicone is preferably 4 to 12, more preferably 8 to 10. Also, the number of moles of glycerin added to the polyglycerin group contained in the a) modified silicone is preferably 1 to 10, more preferably 1 to 4. a) The modified silicone preferably further has a bulky side chain, and examples of such side chains include trimethylsiloxy groups. It is preferred to write in the specification that "it preferably has". a) As the modified silicone, those having an HLB of preferably 2 to 6, more preferably 2 to 4 can be used. The above HLB value is calculated by the following Griffin method. HLB = 20×(molecular weight of hydrophilic group / molecular weight of the whole)

[0010] Specific examples of the a) modified silicone in the present invention preferably include lauryl PEG-10 tris(trimethylsiloxy)silylethyldimethylcon, cetyl diglyceryl tris(trimethylsiloxy)silylethyldimethylcon, cetyl PEG / PPG-10 / 1 dimethicone, lauryl PEG-9 polydimethylsiloxyethyldimethylcon, lauryl PEG / PPG-18 / 18 methicone, etc., from the viewpoints of desired feel and emulsion stability.

[0011] The content of the a) modified silicone in the composition of the present invention is preferably 1.5 to 5.0% by weight, more preferably 2 to 5% by weight, and still more preferably 3 to 4% by weight of the whole composition. By containing it within such a range, a fresh stretch during application and a non-greasy and smooth after-feel on the skin can be more easily obtained.

[0012] The composition of the present invention substantially does not contain silicone oil. Here, "silicone oil" refers to a substance having a siloxane skeleton, not soluble in water, and having no emulsifying ability. Note that "not soluble in water" means phase separation from water after being suspended in water at 25 to 90°C and left standing for 1 hour. In a preferred embodiment of the present invention, the silicone oil is a volatile silicone oil. Note that in this specification, "volatile" means that the boiling point under atmospheric pressure is less than 260°C. As the volatile silicone oil, specifically, cyclic silicone oils such as octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, etc., and chain silicone oils such as caprylyl methicone, dimethylpolysiloxane (dimethicone), methylphenylpolysiloxane, methylhydrogenpolysiloxane, (dimethicone / vinyl dimethicone) copolymer, (dimethicone / phenylvinyl dimethicone) copolymer, etc. may be mentioned.

[0013] In this specification, "substantially not contained" means that the content is preferably 0.1% by weight or less, more preferably 0.01% by weight or less, still more preferably 0.001% by weight or less, and particularly preferably 0% by weight of the whole composition.

[0014] Examples of the b) oil agent contained in the composition of the present invention include ester oils, natural oils, hydrocarbon oils, etc. By containing 20% by weight or more of the ester oil as the b) oil agent, a fresh elongation during application and a non-greasy and smooth after-feel on the skin can be realized. Examples of ester oils include alkyl fatty acid esters, monoglycerides, triglycerides, ultraviolet absorbers, etc. More specifically, cetyl ethylhexanoate, isopropyl myristate, cetyl octanoate, octyldodecyl myristate, isopropyl palmitate, ethylhexyl palmitate, butyl stearate, hexyl laurate, myristyl myristate, decyl oleate, hexyldecyl dimethyloctanoate, cetyl lactate, myristyl lactate, lanolin acetate, isocetyl stearate, isocetyl isostearate, cholesteryl 12 - hydroxystearate, ethylene glycol di - 2 - ethylhexanoate, dipentaerythritol fatty acid ester, N - alkyl glycol monoisostearate, neopentyl glycol dicaprate, diisostearyl malate, glyceryl di - 2 - heptylundecanoate, trimethylolpropane tri - 2 - ethylhexanoate, trimethylolpropane triisostearate, pentaerythritol tetra - 2 - ethylhexanoate, glyceryl tri - 2 - ethylhexanoate, trimethylolpropane triisostearate, cetyl 2 - ethylhexanoate, 2 - ethylhexyl palmitate, glyceryl trimyristate, triglyceride, glyceryl triisopalmitate, glyceryl trioctanoate, glyceryl tri - 2 - heptylundecanoate, methyl ester of castor oil fatty acid, oleic acid oil, cetostearyl alcohol, acetoglyceride, 2 - heptylundecyl palmitate, diisobutyl adipate, N - lauroyl - L - glutamic acid - 2 - octyldodecyl ester, di - 2 - heptylundecyl adipate, ethyl laurate, di - 2 - ethylhexyl sebacate, 2 - hexyldecyl myristate, 2 - hexyldecyl palmitate, 2 - hexyldecyl adipate, diisopropyl sebacate, 2 - ethylhexyl succinate, ethyl acetate, butyl acetate, amyl acetate, triethyl citrate, octyl methoxycinnamate, octyl methoxysalicylate, etc.

[0015] In the present invention, the oil agent in b) preferably contains a volatile hydrocarbon oil in addition to the ester oil. Here, the "volatile hydrocarbon oil" corresponds to a "volatile organic compound (VOC)", and usually refers to those having a boiling point of less than 260 °C under atmospheric pressure. Examples of such volatile hydrocarbon oils include isododecane, isohexadecane, light liquid paraffin, alkanes having 13 to 28 carbon atoms, squalane, hydrogenated poly(C6-12) olefin, hydrogenated polyisobutene, and the like.

[0016] As the oil agent in b) in the composition of the present invention, natural oils such as avocado oil, camellia oil, turtle oil, macadamia nut oil, corn oil, mink oil, olive oil, rapeseed oil, egg yolk oil, sesame oil, persic oil, wheat germ oil, southern magnolia oil, castor oil, linseed oil, safflower oil, cottonseed oil, eno oil, soybean oil, peanut oil, tea seed oil, kaya oil, rice bran oil, sinagiri oil, Japanese cedar oil, jojoba oil, germ oil, sunflower oil, etc. may be included.

[0017] The content of the oil agent in b) in the present invention is preferably 30 to 70% by weight, more preferably 30 to 60% by weight, and even more preferably 35 to 50% by weight of the whole composition.

[0018] The composition of the present invention preferably further contains c) an organically modified clay mineral. The presence of the organically modified clay mineral causes the oil phase to gel, making it easier to produce a "resilient feeling" of feeling a certain resistance when applying the composition and a "crumbling feeling" of the composition collapsing and penetrating into the skin. In addition, by containing the organically modified clay mineral, water evaporation is likely to be suppressed on the skin to which the composition is applied.

[0019] The organically modified clay mineral may be appropriately selected from those commonly used in cosmetics and the like. For example, known clay minerals such as hectorite, montmorillonite, saponite, hectorite, bentonite, smectite, etc., which have been treated with organic cations, can be mentioned. More specifically, dimethyldistearylammonium hectorite (such as quaternium-18 hectorite), dimethyldistearylammonium bentonite (such as quaternium-18 bentonite, quaternium-90 bentonite, etc.), benzyldimethylstearylammonium hectorite, dioctadecyl dimethylammonium salt-modified montmorillonite, octadecyl dimethylbenzylammonium salt-modified montmorillonite, and dihexadecyl dimethylammonium salt-modified montmorillonite, dimethyldistearylammonium smectite, etc. can be mentioned.

[0020] The content of the organically modified clay mineral in the composition of the present invention is preferably 0.1 to 3.5% by weight, more preferably 0.5 to 3.0% by weight, and still more preferably 2.0 ~3.0% by weight.

[0021] The dosage form of the composition of the present invention is an oil-in-water emulsion type. In the present invention, such a dosage form is not particularly limited as long as the outermost phase is an oil phase, and in addition to the W / O type, it may also be an O / W / O type or a (W1 + W2) / O type, etc.

[0022] The composition of the present invention usually contains an aqueous component and an oily component. The aqueous component may be, in addition to water, a component that dissolves in water at 25 to 90 °C. Usually, a surfactant is also included therein, and a) modified silicone is also included. The oily component is not limited to b) an oil agent, and may be a component that suspends in water at 25 to 90 °C and phase-separates from water after standing for 1 hour. In the emulsion composition of the present invention, the weight ratio of the content of the aqueous component to the oily component is not particularly limited, but is preferably 30:70 to 90:10, more preferably 60:40 to 85:15.

[0023] The water-in-oil emulsion composition of the present invention spreads with a fresh feeling when applied to the skin, etc., even without blending silicone oil, especially volatile silicone. In addition, the skin after application is not sticky and feels smooth. Furthermore, the emulsion stability is excellent even after storage over time.

[0024] Therefore, the composition of the present invention can be preferably used as an external preparation for the skin. The topical skin preparation is preferably in the form of a cosmetic or quasi-drug, and is preferably used in skin care. Cosmetics, sunscreen cosmetics, and make-up cosmetics are more preferred, and cleansing agents are even more preferred. More specific examples of the cosmetic include cleansing agents, face washes, body soaps, and hand soaps.

[0025] The water-in-oil emulsion composition of the present invention can be produced according to a conventional method.

[0026] The cosmetic of the present invention may contain any other ingredients that are usually used in cosmetics, so long as the effects of the present invention are not impaired. Examples of such optional ingredients include alcohols, ethers, powders, moisturizing agents, surfactants other than a), sequestering agents, pearlescent agents, amino acids, organic amines, polymer emulsions, pH adjusters, vitamins, antioxidants, preservatives, water-soluble polymers, fragrances, various active ingredients, etc.

[0027] Examples of the alcohol include monohydric alcohols such as cetanol, batyl alcohol, behenyl alcohol, palmitoleyl alcohol, heptadecanol, 1-heptadecanol, stearyl alcohol, isostearyl alcohol, elaidyl alcohol, oleyl alcohol, linoleyl alcohol, elaidolinoleyl alcohol, linolenyl alcohol, elaidolinolenyl alcohol, ricinoleyl alcohol, nonadecyl alcohol, arachidyl alcohol, heneicosanol, behenyl alcohol, erucyl alcohol; dihydric alcohols such as ethylene glycol, 1,3-butylene glycol, trimethylene glycol, 1,2-butylene glycol, propylene glycol, dipropylene glycol, propanediol, 1,2-pentanediol, 3-methyl-1,3-butanediol, tetramethylene glycol, 2,3-butylene glycol, pentamethylene glycol, 2-butene-1,4-diol, hexylene glycol, octylene glycol; trihydric alcohols such as trimethylolpropane; tetrahydric alcohols such as pentaerythritol; pentahydric alcohols such as xylitol; polyhydric alcohol polymers such as triglycerin, tetraglycerin, polyglycerin; sugar alcohols such as starch decomposition sugar-reduced alcohol; polyglycerin; Alcohol alkyl ethers such as ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, ethylene glycol monophenyl ether, ethylene glycol monohexyl ether, ethylene glycol mono-2-methylhexyl ether, ethylene glycol isoamyl ether, ethylene glycol benzyl ether, ethylene glycol isopropyl ether; Alcohol alkyl ethers such as diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, triethylene glycol monomethyl ether, triethylene glycol monoethyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monobutyl ether, propylene glycol isopropyl ether, dipropylene glycol methyl ether, dipropylene glycol ethyl ether, dipropylene glycol butyl ether, etc.; Glycerin monoalkyl ethers such as xylyl alcohol, cerakyl alcohol, batyl alcohol, etc.; Alcohol polymers such as diethylene glycol, triethylene glycol, polypropylene glycol, tetraethylene glycol, polyethylene glycol, etc.; Examples include glysolide; tetrahydrofurfuryl alcohol; POE - tetrahydrofurfuryl alcohol; POP - butyl ether; POP·POE - butyl ether; tripolyoxypropylene glycerin ether; POP - glycerin ether; POP - glycerin ether phosphate; POP·POE - pentaerythritol ether, etc.

[0028] As the ether, in addition to those corresponding to the above alcohols, Ethylene glycol dimethyl ether, ethylene glycol diethyl ether, ethylene glycol dibutyl ether, diethylene glycol dimethyl ether, diethylene glycol diethyl ether, diethylene glycol methyl ethyl ether, ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, ethylene glycol monobutyl ether acetate, ethylene glycol monophenyl ether acetate, ethylene glycol diadipate, ethylene glycol disuccinate, diethylene glycol monoethyl ether acetate, diethylene glycol monobutyl ether acetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monopropyl ether acetate, propylene glycol monophenyl ether acetate, etc. may be mentioned.

[0029] As for the powder, its shape such as spherical, needle-like, plate-like is not particularly limited. For example, inorganic powders (e.g., talc, kaolin, mica, sericite, muscovite, phlogopite, synthetic mica, biotite, vermiculite, magnesium carbonate, calcium carbonate, aluminum silicate, barium silicate, calcium silicate, magnesium silicate, strontium silicate, metal tungstate, magnesium, silica, alumina, zeolite, barium sulfate, calcined calcium sulfate (calcined gypsum), calcium phosphate, fluorapatite, hydroxyapatite, ceramic powder, boron nitride, etc.); organic powders (e.g., polyamide resin powder (nylon powder), polyethylene powder, poly(methyl)acrylate methyl powder, polystyrene powder, copolymer resin powder of styrene and acrylic acid, silicone resin powder, benzoguanamine resin powder, polytetrafluoroethylene powder, cellulose powder, etc.); metal soaps (e.g., zinc myristate, calcium palmitate, aluminum stearate); inorganic white pigments (e.g., titanium dioxide, zinc oxide, etc.); inorganic red pigments (e.g., iron oxide (red iron oxide), iron titanate, etc.); inorganic brown pigments (e.g., γ-iron oxide, etc.); inorganic yellow pigments (e.g., yellow iron oxide, loess, etc.); inorganic black pigments (e.g., black iron oxide, lower-order titanium oxide, etc.); inorganic purple pigments (e.g., manganese violet, cobalt violet, etc.); inorganic green pigments (e.g., chromium oxide, chromium hydroxide, cobalt titanate, etc.); inorganic blue pigments (e.g., ultramarine, navy blue, etc.); pearl pigments (e.g., titanium dioxide-coated mica, titanium dioxide-coated bismuth oxychloride, titanium dioxide-coated talc, colored titanium dioxide-coated mica, bismuth oxychloride, fish scale foil, etc.); metal powder pigments (e.g., aluminum powder, copper powder, etc.); organic pigments such as zirconium, barium or aluminum lakes (e.g., organic pigments such as Red No. 201, Red No. 202, Red No. 204, Red No. 205, Red No. 220, Red No. 226, Red No. 228, Red No. 405, Orange No. 203, Orange No. 204, Yellow No. 205, Yellow No. 401, and Blue No. 404, Red No. 3, Red No. 104, Red No. 106, Red No. 227, Red No. 230, Red No. 401, Red No. 505, Orange No. 205, Yellow No. 4, Yellow No. 5, Yellow No. 202, Yellow No. 203, Green No. 3 and Blue No. 1, etc.); natural pigments (e.g., chlorophyll, β-carotene, etc.), etc. can be mentioned.

[0030] Examples of silicone oils other than component (c) include cyclopentasiloxane, decamethylcyclopentasiloxane, caprylyl methicone, (dimethylsilicone / vinyl dimethylsilicone) copolymer, (dimethylsilicone / phenyl vinyl dimethylsilicone) copolymer, etc.

[0031] Examples of the humectant include chondroitin sulfate, hyaluronic acid, mucin sulfate, caronin acid, atelocollagen, cholesteryl-12-hydroxystearate, sodium lactate, dl-pyrrolidone carboxylate, short-chain soluble collagen, diglycerin (EO) PO adduct, extract of Rosa multiflora Thunb., extract of Viola arvensis Murray, extract of Prunella vulgaris L., etc.

[0032] Examples of other surfactants include anionic surfactants, cationic surfactants, amphoteric surfactants, and nonionic surfactants. However, surfactants other than a) modified silicone are preferably 5% by weight or less of the total composition from the viewpoint of obtaining a desired feeling of use.

[0033] ​Examples of anionic surfactants include, for example, fatty acid soaps (e.g., sodium laurate, sodium palmitate, etc.); higher alkyl sulfate salts (e.g., sodium lauryl sulfate, potassium lauryl sulfate, etc.); alkyl ether sulfate salts (e.g., triethanolamine POE lauryl sulfate, sodium POE lauryl sulfate, etc.); N-acyl sarcosinates (e.g., sodium lauroyl sarcosinate, etc.); higher fatty acid amide sulfonates (e.g., sodium N-myristoyl-N-methyltaurine, sodium coconut fatty acid methyl tauride, sodium lauryl methyl tauride, etc.); phosphate ester salts (sodium POE oleyl ether phosphate, POE stearyl ether phosphate, etc.); sulfosuccinates (e.g., sodium di-2-ethylhexyl sulfosuccinate, sodium monolauroyl monoethanolamine polyoxyethylene sulfosuccinate, sodium lauryl polypropylene glycol sulfosuccinate, etc.); alkylbenzene sulfonates (e.g., sodium linear dodecylbenzene sulfonate, triethanolamine linear dodecylbenzene sulfonate, linear dodecylbenzene sulfonic acid, etc.); higher fatty acid ester sulfate salts (e.g., sodium hardened coconut oil fatty acid glycerol sulfate, etc.); N-acyl glutamates (e.g., sodium N-lauroyl glutamate, disodium N-stearoyl glutamate, sodium N-myristoyl-L-glutamate, etc.); sulfated oils (e.g., tall oil, etc.); POE alkyl ether carboxylic acids; POE alkyl allyl ether carboxylates; α-olefin sulfonates; higher fatty acid ester sulfonates; secondary alcohol sulfate salts; higher fatty acid alkyloleamide sulfate salts; sodium lauroyl monoethanolamine succinate; diethanolamine N-palmitoyl aspartate; sodium caseinate, etc.

[0034] Examples of cationic surfactants include alkyltrimethylammonium salts (e.g., stearyltrimethylammonium chloride, lauryltrimethylammonium chloride, etc.); alkylpyridinium salts (e.g., cetylpyridinium chloride, etc.); distearyldimethylammonium chloride dialkyldimethylammonium salts; poly(N,N'-dimethyl- 3,5-methylenepiperidinium) chloride; alkyl quaternary ammonium salts; alkyl dimethylbenzylammonium salts; alkylisoquinolinium salts; dialkylmorphonium salts; POE alkylamines; alkylamine salts; polyamine fatty acid derivatives; amyl alcohol fatty acid derivatives; benzalkonium chloride; benzethonium chloride, etc.

[0035] Examples of amphoteric surfactants include imidazoline-based amphoteric surfactants (e.g., 2-undecyl-N,N,N-(hydroxyethylcarboxymethyl)-2-imidazoline sodium, 2-cocoyl-2-imidazolinium hydroxide-1-carboxyethyloxy 2 sodium salt, etc.); betaine-based surfactants (e.g., 2-heptadecyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, lauryldimethylaminoacetic acid betaine, alkyl betaine, amide betaine, sulfobetaine, etc.).

[0036] Examples of nonionic surfactants include polyether-modified silicones other than a) (e.g., polyethylene glycol-10 dimethicone, polyethylene glycol-12 dimethicone, etc.); polyglycerin-modified silicones other than a) (e.g., polyglyceryl-3 disiloxane dimethicone, polyglyceryl-3 polydimethylsiloxyethyl dimethicone, etc.); sorbitan fatty acid esters (e.g., sorbitan monooleate, sorbitan monostearate, sorbitan monoisostearate, sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan sesquioleate, sorbitan trioleate, penta-2-ethylhexanoic acid diglycerol sorbitan, tetra-2- ​Diglycerol sorbitan ethylhexanoate, etc.); glycerol fatty acids (e.g., glycerol monoricinoleate, glycerol monoelaidate, glycerol sesquioleate, glycerol monostearate, α,α’-glycerol pyroglutamate oleate, glycerol monostearate malate, etc.); propylene glycol fatty acid esters (e.g., propylene glycol monostearate, etc.); POE castor oil and hydrogenated castor oil derivatives (POE castor oil, POE hydrogenated castor oil, etc.); non-hydrophilic non-ionic surfactants such as glycerol alkyl ethers. Also, polyglycerol fatty acid esters (e.g., polyglyceryl monooleate, polyglyceryl monostearate, etc.); POE sorbitan fatty acid esters (e.g., POE sorbitan monooleate, POE sorbitan monostearate, POE sorbitan tetraoleate, etc.); POE sorbit fatty acid esters (e.g., POE sorbit monolaurate, POE sorbit monooleate, POE sorbit pentaoleate, POE sorbit monostearate, etc.); POE glycerol fatty acid esters (e.g., POE glycerol monostearate, POE glycerol monoisostearate, POE glycerol triisostearate, etc., such as POE monooleate); POE fatty acid esters (e.g., POE distearate, POE monodioleate, ethylene glycol distearate, etc.); POE alkyl ethers (e.g., POE lauryl ether, POE oleyl ether, POE stearyl ether, POE-behenyl ether, POE-2-octyldodecyl ether, POE cholestanol ether, etc.); POE alkyl phenyl ethers (e.g., POE nonyl phenyl ether, etc.); pluronic types (e.g., Pluronic (registered trademark), etc.); POE·POP alkyl ethers (e.g., POE·POP cetyl ether, POE·POP-2-decyltetradecyl ether, POE·POP monobutyl ether, POE·POP hydrogenated lanolin, POE·POP glycerol ether, etc.); tetra POE·tetraPOP ethylenediamine condensate Compounds (e.g., tetronic, etc.); POE castor oil hydrogenated castor oil derivatives (e.g., POE castor oil, POE hydrogenated castor oil, POE hydrogenated castor oil monoisostearate, POE hydrogenated castor oil triisostearate, POE hydrogenated castor oil monopyroglutamic acid monoisostearate diester, POE hydrogenated castor oil maleic acid, etc.); POE beeswax-lanolin derivatives (e.g., POE sorbitol beeswax, etc.); alkanolamides (e.g., coconut oil fatty acid diethanolamide, lauric acid monoethanolamide, fatty acid isopropanolamide, etc.); POE propylene glycol fatty acid esters; POE alkylamines; POE fatty acid amides; sucrose fatty acid esters; alkyl glucosides; alkyl ethoxydimethylamine oxides; hydrophilic nonionic surfactants such as trioleyl phosphate are also included.

[0037] Examples of metal ion sequestering agents include 1-hydroxyethane-1,1-diphosphonic acid, tetrasodium salt of 1-hydroxyethane-1,1-diphosphonic acid, disodium edetate, trisodium edetate, tetrasodium edetate, sodium citrate, sodium polyphosphate, sodium metaphosphate, gluconic acid, phosphoric acid, citric acid, ascorbic acid, succinic acid, edetic acid, trisodium ethylene diamine hydroxyethyl triacetate, etc.

[0038] Examples of pearlescent agents include glycol distearate, titanium mica, etc.

[0039] Examples of amino acids include neutral amino acids (e.g., threonine, cysteine, etc.); basic amino acids (e.g., hydroxylysine, etc.). Also, examples of amino acid derivatives include sodium acyl sarcosinate (sodium lauroyl sarcosinate), acyl glutamate, sodium acyl β-alanine, glutathione, pyrrolidone carboxylic acid, etc.

[0040] Examples of organic amines include monoethanolamine, diethanolamine, trieth Examples include norlamine, morpholine, triisopropanolamine, 2-amino-2-methyl-1,3-propanediol, 2-amino-2-methyl-1-propanol, and the like.

[0041] Examples of the polymer emulsion include acrylic resin emulsion, polyethyl acrylate emulsion, acrylic resin solution, polyalkyl acrylate emulsion, polyvinyl acetate resin emulsion, natural rubber latex, and the like.

[0042] Examples of the pH adjuster include buffers such as lactic acid - sodium lactate, citric acid - sodium citrate, succinic acid - sodium succinate, etc., and they are usually used for adjusting the pH of the internal phase (aqueous component).

[0043] Examples of vitamins include vitamin A, B1, B2, B6, C, E and their derivatives , pantothenic acid and its derivatives, biotin, and the like.

[0044] Examples of the antioxidant include tocopherols, dibutylhydroxytoluene (BHT), butylhydroxyanisole, pyrosulfite, gallate, phosphoric acid, citric acid, ascorbic acid, maleic acid, malonic acid, succinic acid, fumaric acid, cephalin, hexametaphosphate, phytic acid, ethylenediaminetetraacetic acid, and the like.

[0045] Examples of the preservative include parabens, phenoxyethanol, and the like.

[0046] Examples of the water-soluble polymer include plant-based polymers (e.g., gum arabic, tragacanth gum, galactan, guar gum, carob gum, karaya gum, carrageenan, pectin, agar, quince seed (quince), algocolloid (cassou extract), starch (corn , maize, potato, wheat), glycyrrhizic acid); microbial-based polymers (e.g. natural water-soluble polymers such as xanthan gum, dextran, succinoglucan, pullulan, etc.; animal-based polymers (e.g., collagen, casein, albumin, gelatin, etc.) semi-synthetic water-soluble polymers such as starch-based polymers (e.g., carboxymethyl starch, methylhydroxypropyl starch, etc.); cellulose-based polymers (hydroxypropyl methylcellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, methylcellulose, ethylcellulose, hydroxypropyl methylcellulose stearoxy ether, sodium cellulose sulfate, carboxymethyl cellulose, sodium carboxymethyl cellulose, crystalline cellulose, cellulose powder, etc.); alginic acid-based polymers (e.g., sodium alginate, propylene glycol alginate, etc.) synthetic water-soluble polymers such as vinyl-based polymers (e.g., polyvinyl alcohol, polyvinyl methyl ether, polyvinyl pyrrolidone, carboxyvinyl polymer, etc.); polyoxyethylene-based polymers (e.g., polyethylene glycol 20,000, 40,000, 60,000, etc.); acrylic-based polymers (e.g., sodium polyacrylate, polyethyl acrylate, polyacrylamide, etc.); polyethyleneimine; cationic polymers

[0047] Examples of various active ingredients include anti-inflammatory agents (e.g., glycyrrhizic acid derivatives, glycyrrhetinic acid derivatives, salicylic acid derivatives, hinokitiol, zinc oxide, allantoin, etc.); whitening agents (e.g., placenta extract, snowdrop extract, arbutin, etc.); various extracts (e.g., eucommia, cinnamon, citrus, peony, ginseng, birch, sage, loquat, carrot, aloe, butterbur, iris, grape, licorice, loofah, lily, saffron, cnidium, ginger, chickweed, ononis, garlic, pepper, chinpi, toki, seaweed, etc.), activators (e.g., royal jelly, photosensitizer, cholesterol derivatives, etc.); blood circulation promoters (e.g., nonylic acid vanillylamide, benzyl nicotinate, β-butoxyethyl nicotinate, capsaicin, gingerol, cantharidin, ikta Malls, tannic acid, α-borneol, nicotinic acid tocopherol, inositol hexanicotinate, cyclandelate, cinnarizine, triazolines, acetylcholine, verapamil, cephalanthin, γ-oryzanol, etc.); Sebum suppressants (e.g., sulfur, thiantol, etc.); Anti-inflammatory agents (e.g., tranexamic acid, thiotaurine, hypotaurine, etc.) and the like.

Examples

[0048] Hereinafter, the present invention will be described in more detail with reference to examples. However, the present invention is not limited to the following examples as long as the gist thereof is not exceeded.

[0049] <Production Examples and Evaluations> With the formulation components shown in Table 1, the oil phase component and the aqueous phase component were each heated to 70 ° C and dissolved, the aqueous phase was added to the oil phase component, and emulsified while stirring with a homomixer to prepare an oil-in-water type emulsion composition. After storing the obtained composition at 40 ° C for 4 weeks, the appearance was observed and the stability was evaluated according to the following criteria. (Stability) ◎: No separation was observed and it was stable. ○: Slight separation occurred, but at a level where there was no problem with the quality. △: Some separation occurred. ×: Visible separation was observed.

[0050] Also, each of 10 female expert panels took 0.5 g of each prepared composition on the back of the hand and evaluated the sensory properties of whether there was a fresh and good stretch during application and whether the back of the hand was sticky, and the evaluation results were based on the following criteria. (Fresh and good stretch) ◎: 9 or more out of 10 people answered "fresh stretch". ○: 7 or more out of 10 people answered "fresh stretch". △: 5 or more out of 10 people answered "fresh stretch". ×: 4 or fewer out of 10 people answered "fresh stretch". (Absence of stickiness on the back muscles) ◎: 9 or more out of 10 people answered that "the back muscles are not sticky". ○: 7 or more out of 10 people answered that "the back muscles are not sticky". △: 5 or more out of 10 people answered that "the back muscles are not sticky". ×: 4 or fewer out of 10 people answered that "the back muscles are not sticky". The evaluation results are shown together in Table 1.

[0051]

Table 1

Industrial Applicability

[0052] The water-in-oil emulsion composition of the present invention imparts a fresh stretch during application and a non-sticky and smooth feeling on the back muscles, and is also stable over time. The water-in-oil emulsion composition of the present invention is suitable for use as a topical skin preparation and can meet the needs of consumers and the like, so it is very useful industrially.

Claims

Claim 1 An oil-in-water emulsion composition containing (a) a modified silicone and (b) an oil agent, and containing no volatile silicone oil or containing it in an amount of 0.1% by weight or less of the whole composition, wherein (a) the modified silicone is selected from the group consisting of lauryl PEG-10 tris(trimethylsiloxy)silylethyldimethylcon, cetyl diglyceryl tris(trimethylsiloxy)silylethyldimethylcon, cetyl PEG / PPG-10 / 1 dimethicone, lauryl PEG-9 polydimethylsiloxyethyldimethylcon, and lauryl PEG / PPG-18 / 18 methicone, wherein (b) 20% by weight or more of the oil agent contains an ester oil, wherein the ester oil contains one or more selected from the group consisting of cetyl ethylhexanoate, octyl methoxycinnamate, and ethylhexyl palmitate, wherein (b) the oil agent is 35 to 50% by weight of the whole composition, The volatile silicone oil is selected from the group consisting of octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, and dodecamethylcyclohexasiloxane, provided that the composition does not include an oil-in-water emulsion cosmetic containing titanium oxide fine particles surface-treated with triethoxycaprylylsilane or titanium oxide fine particles surface-treated with triethoxycaprylylsilane and further surface-treated with a (dimethicone / methicone) copolymer, polyhydroxystearic acid, liquid paraffin, cetyl octanoate, octyl methoxycinnamate, lauryl PEG-9 polydimethylsiloxyethyl dimethicone, 1,2-butylene glycol, glycerin, ethanol, methylparaben, sodium chloride, and purified water, and also does not include an oil-in-water emulsion cosmetic containing titanium oxide fine particles surface-treated with triethoxycaprylylsilane and further surface-treated with a (dimethicone / methicone) copolymer, zinc oxide fine particles surface-treated with triethoxycaprylylsilane and further surface-treated with a (dimethicone / methicone) copolymer, 2,4,6-tris[4-(2-ethylhexyloxycarbonyl)anilino]-1,3,5-triazine, octyl methoxycinnamate, isononyl isononanoate, inulin stearate, polyhydroxystearic acid, liquid paraffin, light liquid isoparaffin, cetyl PEG / PPG-10 / 1 dimethicone, purified water, a methylene bisbenzotriazolyltetramethylbutylphenol aqueous dispersion, sodium chloride, methylparaben, and perfume).

2. b) The composition according to claim 1, wherein the oil agent contains a volatile hydrocarbon oil.

3. c) The composition according to claim 1 or 2, further containing an organically modified clay mineral.

4. The composition according to any one of claims 1 to 3, which is a topical skin preparation.

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